• Thuy Thi Thu Thanh Institute of Chemistry (VAST)
  • Thu Thi Minh Quach Institute of Chemistry (VAST)
  • Thuan Thi Nguyen Nhatrang Institute of Technology Research and Application (VAST)
  • Van Thi Thanh Tran Nhatrang Institute of Technology Research and Application (VAST)
  • Xuan Thi Thanh Do Institute of Chemistry (VAST)
  • Cuong Duc Ho Hanoi University of Science and Technology



red seaweed, Acanthophora spicifera, polysaccharide, structure


In this work, the red seaweed Acanthophora spicifera was submitted to aqueous  extraction of polysaccharide and the yield was 12.6% based on dried seaweed weight. HPAEC, GPC, IR and NMR methods were used for structural determination of the polysaccharide. The results showed that the polysaccharide was composed of  rhamnose, galactose, xylose, manose, glucose,  monomer ratio of Gal : Xyl : Glc : Rham : Man equal to 20.9 : 2.84. 0.57 : 0.16; sulfate content 25.6%w with a  molecular weight of 1327500 g/mol. The following repeating structure →4)-α-Gal6S-(1→3)-β-Gal-(1→ was found for this polysaccharide. 


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The 7th National Workshop on Research and Development of Natural Products